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Emergency power supply circuit and power supply circuit conversion method

An emergency power supply and line technology, applied in emergency power supply arrangements, circuit devices, electrical components, etc., can solve problems such as high cost, many fault points, and large losses

Pending Publication Date: 2015-05-06
深圳市昆腾电源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention provides an emergency power supply circuit, which aims to solve the problems of large loss, many fault points and high cost in the prior art

Method used

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  • Emergency power supply circuit and power supply circuit conversion method
  • Emergency power supply circuit and power supply circuit conversion method
  • Emergency power supply circuit and power supply circuit conversion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to figure 1 As shown, an emergency power supply circuit includes a main power supply line (main power supply), a backup power supply line (backup power supply), and a dual-way automatic conversion device connected to the main power supply line and the backup power supply line. The automatic conversion device is connected with the electrical equipment, and the two-way automatic conversion device is connected with the control unit, and the control unit performs real-time sampling and detection on the instantaneous voltage value and phase of the input voltage of the main power supply line to obtain a detection Measure the signal, and calculate the sending time of the control signal according to the action time characteristics of the two-way automatic switching device, so that the action time point of the two-way automatic switching device is consistent with the time when the input voltage value of the main power supply line reaches zero. During the power supply proce...

Embodiment 2

[0039] refer to figure 2As shown, in this embodiment, after canceling the inverter module in the backup power supply line, the DC power supply is directly provided to the electrical equipment for backup, reducing the inverter link to reduce losses and equipment failure points to reduce equipment costs. Switching between the main and standby power supply lines prevents the situation that the DC power cannot be cut off during the switching process from the backup to the main power supply line, and further prevents the process of switching from the main to the standby when the method described in Embodiment 1 fails, adding a A switching scheme, a first auxiliary switch connected in parallel with the two-way automatic conversion device is provided between the main power supply line (main power supply) and the electrical equipment, and the first auxiliary switch adopts semiconductor switching components , the first auxiliary switch is electrically connected to the control unit and...

Embodiment 3

[0043] Please refer to image 3 As shown, the emergency power supply circuit provided by this embodiment is different from that of Embodiment 2. In this embodiment, a second auxiliary switch is not connected in parallel to the dual-way automatic transfer device, but a second auxiliary switch is provided on the backup power supply line. There is a single-way switching device, the backup power supply line is provided with a third auxiliary switch connected in parallel with the single-way switching device, the third auxiliary switch adopts semiconductor switching components, and the third auxiliary switch is connected with the control unit connection. The third auxiliary switch adopts IGBT or MosFET semiconductor switching components. Separate switches are provided at the starting ends of the main power supply line (main power supply) and the standby power supply line (backup power supply). The specific steps to convert the operation method are,

[0044] When the main power su...

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PUM

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Abstract

The invention provides an emergency power supply circuit comprising a main power supply circuit, a standby power supply circuit and a double-circuit automatic conversion device connected to the main power supply circuit and the standby power supply circuit. The double-circuit automatic conversion device is connected to electric equipment and a control unit; the control unit is used for sampling and measuring the instantaneous voltage value and phase of the input voltage of the main power supply circuit in real time and computing the control signal transmitting time according to the action time characteristics of the double-circuit automatic conversion device so as to allow the action time point of the double-circuit automatic conversion device to be consistent with the zero time of the input voltage value of the main power supply circuit. The control unit adopts the computed voltage zero crossing time point as the switching time point, the arcing situation is eliminated thoroughly, and the safety and reliability for equipment operation is further guaranteed.

Description

technical field [0001] The invention belongs to electrical switching equipment, in particular to the technical field of uninterruptible power supply safety power supply. Background technique [0002] For important power consumption occasions such as computer rooms, redundant backup power supply is required for key equipment to avoid immeasurable losses caused by power failure of one input. For the current traditional power distribution scheme, the main power supply and the backup power supply still use AC power supply, and the automatic conversion device switches between the two power supplies. [0003] For occasions with UPS (uninterruptible power supply), the AC power is usually provided by the UPS after rectification and inversion. The above traditional power distribution method has the following disadvantages: [0004] The mains power has undergone multiple AC-DC conversions: UPS rectification→UPS inverter→electrical equipment rectification→electrical equipment step-dow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
CPCY04S20/20Y02B70/30
Inventor 熊小琴田寿龙
Owner 深圳市昆腾电源科技有限公司
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